crypto routines: Hint minimum buffer sizes to the compiler

Use the C99 'static' keyword to hint to the compiler IVs and output digest
sizes.  The keyword informs the compiler of the minimum valid size for a given
array.  Obviously not every pointer can be validated (i.e., the compiler can
produce false negative but not false positive reports).

No functional change.  No ABI change.

Sponsored by:	EMC / Isilon Storage Division

1 files changed, 5 insertions, 5 deletions

diff --git a/sys/crypto/aesni/aesni.h b/sys/crypto/aesni/aesni.h
index 3d5adec..b327c01 100644
--- a/sys/crypto/aesni/aesni.h
+++ b/sys/crypto/aesni/aesni.h
@@ -79,23 +79,23 @@ void aesni_set_deckey(const uint8_t *encrypt_schedule /*__aligned(16)*/,
  */
 void aesni_encrypt_cbc(int rounds, const void *key_schedule /*__aligned(16)*/,
     size_t len, const uint8_t *from, uint8_t *to,
-    const uint8_t iv[AES_BLOCK_LEN]);
+    const uint8_t iv[static AES_BLOCK_LEN]);
 void aesni_decrypt_cbc(int rounds, const void *key_schedule /*__aligned(16)*/,
-    size_t len, uint8_t *buf, const uint8_t iv[AES_BLOCK_LEN]);
+    size_t len, uint8_t *buf, const uint8_t iv[static AES_BLOCK_LEN]);
 void aesni_encrypt_ecb(int rounds, const void *key_schedule /*__aligned(16)*/,
     size_t len, const uint8_t *from, uint8_t *to);
 void aesni_decrypt_ecb(int rounds, const void *key_schedule /*__aligned(16)*/,
     size_t len, const uint8_t *from, uint8_t *to);
 void aesni_encrypt_icm(int rounds, const void *key_schedule /*__aligned(16)*/,
     size_t len, const uint8_t *from, uint8_t *to,
-    const uint8_t iv[AES_BLOCK_LEN]);
+    const uint8_t iv[static AES_BLOCK_LEN]);
 
 void aesni_encrypt_xts(int rounds, const void *data_schedule /*__aligned(16)*/,
     const void *tweak_schedule /*__aligned(16)*/, size_t len,
-    const uint8_t *from, uint8_t *to, const uint8_t iv[AES_BLOCK_LEN]);
+    const uint8_t *from, uint8_t *to, const uint8_t iv[static AES_BLOCK_LEN]);
 void aesni_decrypt_xts(int rounds, const void *data_schedule /*__aligned(16)*/,
     const void *tweak_schedule /*__aligned(16)*/, size_t len,
-    const uint8_t *from, uint8_t *to, const uint8_t iv[AES_BLOCK_LEN]);
+    const uint8_t *from, uint8_t *to, const uint8_t iv[static AES_BLOCK_LEN]);
 
 /* GCM & GHASH functions */
 void AES_GCM_encrypt(const unsigned char *in, unsigned char *out,